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Reports calls to <code>java.util.Set.removeAll()</code> with a <code>java.util.List</code> argument.
<p>
  Such a call can be slow when the size of the argument is greater than or equal to the size of the set,
  and the set is a subclass of <code>java.util.AbstractSet</code>.
  In this case, <code>List.contains()</code> is called for each element in the set, which will perform a linear search.
</p>
<p><b>Example:</b></p>
<pre><code>
  public void check(String... ss) {
    // possible O(n^2) complexity
    mySet.removeAll(List.of(ss));
  }
</code></pre>
<p>After the quick fix is applied:</p>
<pre><code>
  public void check(String... ss) {
    // O(n) complexity
    List.of(ss).forEach(mySet::remove);
  }
</code></pre>
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<p><small>New in 2020.3</small></p>
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